Adding Autofill snippets

[MagicalMeghan]

Adding Autofill snippets for documentation

[snippet-bot]

Here is the summary of changes.

You are about to add 6 region tags.

• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:40, tag android_compose_autofill_1
• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:50, tag android_compose_autofill_2
• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:65, tag android_compose_autofill_3
• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:72, tag android_compose_autofill_4
• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:99, tag android_compose_autofill_5
• compose/snippets/src/main/java/com/example/compose/snippets/text/AutofillSnippets.kt:126, tag android_compose_autofill_6

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[mnuzen]

I notice some other code was added in AnimatedVisibilitySharedElementBlurSnippet.kt and UserInteractions.kt — are these needed? Otherwise, generally looks good!

[mnuzen]

For consistency, should we just get rid of the usernameState val and replace inline on line 130 state = remember ( TextFieldState() } like the other samples do?

[MagicalMeghan]

yeah i'll update